The answer is obtaining written authorization from the organization and defining the scope and rules of engagement. These two best practices for penetration testing are foundational because they establish legal and ethical boundaries, ensuring the tester has explicit permission to operate and a clear understanding of which systems, networks, and techniques are permitted. Without written authorization, the test constitutes unauthorized access, which is illegal, while undefined scope risks causing unintended damage or exceeding the client’s risk tolerance. On the CISSP exam, this concept appears in the Security Assessment and Testing domain, often as a trap where distractors like “using only automated tools” or “notifying law enforcement” seem plausible but violate best practices. A common memory tip is to remember the acronym “ASAP” for Authorization, Scope, Agreement, and Permission—each step must be documented before any testing begins.
CISSP Security Assessment and Testing Practice Question
This CISSP practice question tests your understanding of security assessment and testing. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO of the following are best practices for conducting a penetration test?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Define scope and rules of engagement
Obtaining written authorization and defining scope and rules of engagement are fundamental to ethical and legal testing. Using only automated tools is not best; manual techniques are also needed. Installing backdoors is unethical. Notifying law enforcement is not a standard practice and could compromise the test.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Define scope and rules of engagement
Why this is correct
Clear scope prevents overreach and ensures testing is controlled.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Authentication checks who the user is.
✓
Obtain written authorization from the organization
Why this is correct
Authorization is essential to avoid legal issues and define boundaries.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Authentication checks who the user is.
✗
Install backdoors for future access
Why it's wrong here
Backdoors are malicious and violate ethics.
✗
Notify law enforcement before testing
Why it's wrong here
Law enforcement notification is not typically required and may cause unnecessary escalation.
✗
Use only automated tools
Why it's wrong here
Manual testing is required for thoroughness; over-reliance on automation misses subtle issues.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
Authentication checks who the user is.
Authorization controls what the user is allowed to do after login.
Privilege levels affect access to EXEC and configuration commands.
AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
→Do not assume successful login means full administrative access.
→Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
→Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CISSP question in full detail.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related CISSP questions on access control and AAA configuration.
Security Assessment and Testing — This question tests Security Assessment and Testing — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Define scope and rules of engagement — Obtaining written authorization and defining scope and rules of engagement are fundamental to ethical and legal testing. Using only automated tools is not best; manual techniques are also needed. Installing backdoors is unethical. Notifying law enforcement is not a standard practice and could compromise the test.
What should I do if I get this CISSP question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related CISSP questions on access control and AAA configuration.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Authentication checks who the user is.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This CISSP practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CISSP exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.